Beaks and Radulae of Goniatites

[Architeuthoceras]

Just found this paper on Cephbase Lethaia Vol. 30, 1997 (large PDF) describing the beaks and radula of the Mississippian goniatite Girtyoceras, quite interesting.

The last paragraph

The radula remains stable during the ammonoid evolution and demonstrates a more or less distinct similarity with that in recent octopods.

 

[Clem]

Hello Kevin,

Quite interesting, but that quote sets a new standard for mixed signals:

...a more or less

"Iffy."

...distinct

"Definitely."

...similarity

"No, still iffy."

Cheers,
Clem

 

[Phil]

Thanks Kevin. I've added the paper to the 'Reference Papers' thread.